Chinese Journal of Applied Chemistry ›› 2011, Vol. 28 ›› Issue (01): 44-47.DOI: 10.3724/SP.J.1095.2010.00190

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Electrocatalytic Performance of Carbon-Supported Pt-P Catalyst for Oxygen Reduction

WANG Yan-En1, CAO Shuang2, TANG Ya-Wen3, WANG Chun1, MA Jing-Jun1, LU Tian-Hong3*   

  1. (1.College of Sciences,Hebei Agricultural University,Baoding;
    2.Earth Sciences and Resources Department,Great Wall College,China University of Geosciences,Baoding;
    3.College of Chemistry and Environmental Science,Nanjing Normal University,Nanjing 210097)
  • Received:2010-04-02 Revised:2010-05-03 Published:2011-01-10 Online:2011-01-10

Abstract:

The carbonsupported Pt-P(Pt-P/C) catalyst(m(Pt)∶m(P)=5∶1) was prepared with NaH2PO2 reduction method. The X-ray diffraction results indicate that the 2θ values of the Pt diffraction peaks of the Pt-P/C catalyst are slightly greater than those of the Pt/C catalyst, illustrating that P has entered into the crystal lattice of Pt and forms the Pt-P alloy. The electrochemical measurements demonstrated that the electrocatalytic performance of the Pt-P/C catalyst for the oxygen reduction is better than that of the commercial E-TEK Pt/C catalyst with 40 mV positive shift of reduction potential, which may be attributed to the P action because the average size and the relative crystallinity of the Pt-P particles in the Pt-P/C catalyst are similar to those in Pt/C catalyst.

Key words: Proton exchange membrane fuel cell, Carbon-supported Pt-P catalyst, Carbon-supported Pt catalyst, Oxygen reduction

CLC Number: